KR20010029028A - Projection television - Google Patents

Abstract

PURPOSE: A projection TV is provided to attach or detach a filter screen disposed in front of a screen lens for restricting a transmission of a light to/from a cabinet. CONSTITUTION: A screen lens(7) on which an image is projected is disposed at an opened portion of a cabinet(1). A screen supporting frame(9) is fixed around the opened portion of the cabinet to support the screen lens(7). A filter screen(14) is disposed in front of the screen lens and restricts a transmission of a light. A filter supporting frame(13) is detachably mounted to the screen supporting frame and supports the filter screen. The filter supporting frame(13) includes an upper frame(17) disposed at an upper portion of the screen supporting frame. Side frames(18) are extended downward from the both ends of the upper frame. A lower frame(15) connects the bottom ends of the side frames. A pair of coupling members(51a, 51b), e.g. so-called Velcro or magic tapes, are respectively fixed to a rear lower portion of the lower frame and a front lower portion of the screen supporting frame, so as to detachably mount the filter supporting frame to the screen supporting frame.

Description

Projection television {PROJECTION TELEVISION}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a projection television, and more particularly, to a projection television arranged in front of a screen lens provided in a front opening area of a cabinet so that a filter screen for restricting light transmission can be easily detached from the cabinet. .

1 is a schematic longitudinal sectional view of a conventional projection television cabinet, and FIG. 2 is an enlarged sectional view of the main part of FIG. As shown in these figures, a projection television includes a cabinet 101 having an opening formed on its upper front surface, a screen lens 103 arranged in an opening area of the cabinet 101 and projecting an image from the rear area, and a screen lens. The filter screen 105 is disposed in front of the 103 to limit the transmission of light, and the support frame 107 is coupled to the opening area of the cabinet 101 to support the screen lens 103 and the filter screen 105 Has

The front of the cabinet 101 is protruded to the outside, the frame holder 109 extending along the circumferential direction of the opening of the cabinet 101 is coupled, the frame holder 109 is supported by a plurality of screws 111 107 are combined. A rectangular opening is formed on the front surface of the support frame 107, and a plurality of bosses 115 are formed on the rear side of the opening edge portion. The filter screen 105 is disposed on the rear side of the opening of the support frame 107 so as to be in contact, and the screen lens 103 is disposed on the rear side of the filter screen 105. One end of the filter screen 105 and the screen lens 103 is fixed and supported by contact pressure by a fixing member 113 fixed to the boss portion 115 by a screw 117.

However, in the conventional projection television, the filter screen 105 is integrally fixed to the inner side of the support frame together with the screen lens 103 by the fixing member 113, so that the filter screen 105 is supported on the support frame. In order to separate from 107, first, the support frame 107 coupled to the frame holder 109 by the screw 111 is separated, and then the fixing member 113 fixedly coupled to the support frame 107 is supported by the support frame. There is a hassle to separate from (107).

Accordingly, it is an object of the present invention to provide a projection television that enables easy removal of the filter screen.

1 is a longitudinal sectional view of a cabinet of a conventional projection television;

2 is an enlarged cross-sectional view of the main part of FIG. 1;

3 is an exploded perspective view of a projection television according to an embodiment of the present invention;

4 is an exploded perspective view of the main part of FIG. 3;

Figure 5 is an enlarged cross-sectional view of the upper frame and both side frames of FIG.

6 and 7 are enlarged cross-sectional views of main parts of the coupled state of FIG. 3, respectively.

Explanation of symbols on the main parts of the drawings

1: Cabinet 7: Screen Lens

9: screen support frame 11: filter assembly

13 filter support frame 14 filter screen

15: lower frame 25: flow preventing protrusion

51a, 51b: coupling member

The object is, according to the present invention, a screen lens arranged to block an opening of a cabinet in which an opening is formed in the front surface and onto which an image is projected; A screen support frame fixed to an opening area of the cabinet to support the screen lens; A filter screen disposed at the front of the screen lens to limit light transmission; It is achieved by a projection television, characterized in that it comprises a filter support frame which is detachably coupled to the screen support frame to support the filter screen.

Here, it is preferable to include a pair of coupling members fixed to the lower region of the mutual contact surface of the screen support frame and the filter support frame to detachably couple the filter support frame to the screen support frame.

The filter support frame may include an upper frame disposed in an upper region of the screen support frame, both side frames extending downward from both ends of the upper frame along both side edges of the screen support frame, and both side frames. It is effective to configure to include a lower frame installed horizontally to connect the bottom of the.

In addition, the upper frame and the side frame are configured to have a channel cross-sectional shape to accommodate a region of the screen support frame, at least one of the upper frame and the side frame is the screen support frame It is preferable to configure so that the flow preventing protrusions protruding from the inner wall surface is formed so as to prevent the flow when combined with.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the present invention.

Figure 3 is an exploded perspective view of a projection television according to an embodiment of the present invention, Figure 4 is an enlarged exploded perspective view of the main portion of Figure 3, Figure 5 is an enlarged cross-sectional view of the upper frame and both side frames of Figure 4, Figure 6 and 7 is an enlarged cross-sectional view of main parts of the engaged state of FIG. 3, respectively. As shown in these figures, the present projection television has a cabinet 1 which forms an accommodation space of a part and has an opening formed in the upper front side, and an upper casing 3 which is respectively coupled to the upper and lower regions of the rear side of the cabinet 1. ) And a lower casing 5. The frame holder 4 is coupled to the front opening area of the cabinet 1, and the screen support frame 9 is fastened to the frame holder 4 by the screw 6 so as to support the screen lens 7. It is.

On the back of the screen support frame 9 is formed a boss portion 10 protruding from the plate surface and spaced apart from each other in the circumferential direction of the opening, and one end of the screen lens 7 is fixed to the boss portion 10 in the opening region. It is fixedly supported by the fixed member 12. The filter assembly 11 is detachably coupled to the screen support frame 9 along the vertical direction. The filter assembly 11 includes a filter screen 14 and a filter support frame for supporting the filter screen 14. It consists of (13).

The filter support frame 13 includes an upper frame 17 coupled to receive the upper edge of the screen support frame 9, and both side frames 18 arranged to extend downward from both ends of the upper frame 17. , And a connecting member 31 connecting the upper frame 17 and both side frames 18, and a lower frame 15 arranged horizontally to connect the lower ends of both side frames 18.

The upper frame 17 and both side frames 18 are respectively arranged behind the filter screen 14 and are bent from the filter fixing unit 19 and the filter fixing unit 19 for supporting the filter screen 14. The side wall portion 21 arranged along the thickness direction of the screen support frame 9 and bent parallel to the filter fixing portion 19 from the side wall portion 21 and disposed on the rear surface of the screen support frame 9. The rear surface 23 has a channel cross-sectional shape.

In the boundary area between the filter fixing part 19 and the side wall part 21, the filter screen 14 is removed from the plate surface of the filter fixing part 19 so as to protect the edges of the filter screen 14 adhered to the filter fixing part 19. Protruding jaw 27 is formed to protrude along the thickness direction of the s). The filter fixing portion 19 and the inner wall surfaces of the side wall portion 21 and the rear portion 23 protrude from the plate surface and extend in the longitudinal direction to be in contact with the screen support frame 9, respectively. Flow preventing protrusions 25 for preventing mutual flow of these upper frames 17 and both side frames 18 are formed, respectively.

The connecting member 31 is connected to the upper support frame 17 and the other end of each of the connecting frame 33 and the "L" -shaped connecting support 33, so that the other end can be coupled to the side frame 18, respectively Between the edges extending along the lengthwise direction of each side wall portion 21 of the upper frame 17 and the side frame 18 between the flow preventing protrusions 25 spaced apart in parallel to the inner wall surface of each side wall portion 21 It has a plurality of bleed ribs 35 so as to be able to be coupled to. Each of the bleeding ribs 35 are spaced apart from each other to maintain a constant fastening with the flow preventing protrusions 25 so that the upper frame 17 and both side frames 18 are not easily separated when combined with the flow preventing protrusions 25. It is.

On the other hand, the lower frame 15 is formed of an almost long plate-like member, the filter fixing portion 41 is formed on the front side to be disposed behind the filter screen 14 to be bonded to the filter screen 14 mutually. A protruding jaw 43 is formed at the edge of the filter fixing part 41 to protrude along the thickness direction to protect the edge of the filter screen 14, and to contact the screen support frame 9 at the rear thereof. Protruding portions 45 protruding from the plate surface and extending in the longitudinal direction are formed.

One of the pairs of nylon coupling members 51a, known as Velcro or Magic Tape, is arranged and arranged along the longitudinal direction in the lower lower region of the lower frame 15. Correspondingly, the other one 51b of the coupling members is coupled along the longitudinal direction to the lower front region of the screen support frame 9 so as to be mutually separable and adhesive.

By such a configuration, first, when the coupling sequence of the filter assembly 11 is described, each end of the connection member 31 is coupled to each end of the upper frame 17, respectively, and then both sides of the other end of each connection member 31. Each end of the frame 18 is combined to form a downwardly opening inverted “U” shape. Next, an adhesive member (not shown) is interposed between the rear edge of the filter screen 14 and the filter fixing portion 19 of each frame so that each side of the filter screen 14 is bonded to the filter fixing portion 19, respectively. Then, the lower region of the filter screen 14 is bonded to the filter fixing portion 41 of the lower frame 15 to form a filter assembly (11).

On the other hand, when the filter assembly 11 is to be mounted, the inlet region of the filter support frame 13 opened downward to the upper edge of the screen support frame 9 and both side edges of the screen support frame 9 are filter support frames. Each side frame 18 of (13) is to be accommodated in the interior and then gradually downward pressure. Then, the filter assembly 11 is gradually lowered while the surface of the flow preventing protrusion 25 and the screen support frame 9 formed in each frame of the filter support frame 13 are in sliding contact with each other. When the upper edge of the screen support frame (9) is accommodated in the upper frame (17), the coupling member (51a) is coupled to the back by pressing the lower frame 15, and is coupled to the lower front surface of the screen support frame (9) The coupling member 51b is to be coupled to each other.

When the filter assembly 11 is to be separated from the screen support frame 9, first, the lower frame 15 is pulled forward so that the coupling members 51a and 51b coupled to each other are separated, and then the filter support frame 13 is removed. The filter assembly 11 can be easily separated from the screen support frame 9 by a simple operation of pressing upward.

In the above-described and illustrated embodiments, the case where the filter assembly is configured to slide along the vertical direction from the upper side of the main body casing is described as an example, but the filter assembly may be configured to be coupled from the left side, the right side or the lower side of the main body casing. Of course.

In the above-described and illustrated embodiments, an example is described in which the filter assembly is fixed to the screen support frame by interposing a pair of coupling members, such as Velcro or magic tape, between the filter assembly and the main body casing. A hook coupling means or a snap button may be interposed between the assembly and the screen support frame to be fixed to each other, or may be fixed to each other using a bolt or a screw.

As described above, according to the present invention, by constructing the filter support frame so as to be detachable from the screen support frame, there is provided a projection television which can easily detach the filter screen from the screen support frame.

Claims (5)

A screen lens arranged to block the opening of the cabinet in which the opening is formed on the front surface and to which an image is projected; A screen support frame fixed to an opening area of the cabinet to support the screen lens; A filter screen disposed at the front of the screen lens to limit light transmission; And a filter support frame detachably coupled to the screen support frame to support the filter screen. The method of claim 1, wherein the screen support frame and the filter support frame includes a pair of coupling members fixed to the lower region of the mutual contact surface respectively to detachably couple the filter support frame to the screen support frame Featuring projection television. According to claim 1 or claim 2, wherein the filter support frame, the upper frame disposed in the upper region of the screen support frame, and the amount extending downward along both side edges of the screen support frame from both ends of the upper frame Projection television comprising a side frame, and a lower frame horizontally installed to connect the lower ends of both side frames. 4. The projection television according to claim 3, wherein the upper frame and the side frames have a channel cross-sectional shape to accommodate a region of the screen support frame. The projection of claim 4, wherein at least one of the upper frame and both side frames is provided with a flow preventing protrusion protruding from an inner wall to prevent flow when the screen support frame is coupled to the upper frame. television.